DE2643406A1 - PROCESS FOR BURNING CERAMIC PRODUCTS, IN PARTICULAR PORATED PRODUCTS, IN TUNNELS - Google Patents
PROCESS FOR BURNING CERAMIC PRODUCTS, IN PARTICULAR PORATED PRODUCTS, IN TUNNELSInfo
- Publication number
- DE2643406A1 DE2643406A1 DE19762643406 DE2643406A DE2643406A1 DE 2643406 A1 DE2643406 A1 DE 2643406A1 DE 19762643406 DE19762643406 DE 19762643406 DE 2643406 A DE2643406 A DE 2643406A DE 2643406 A1 DE2643406 A1 DE 2643406A1
- Authority
- DE
- Germany
- Prior art keywords
- zone
- exhaust gas
- tunnel
- gas flow
- products
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Description
Abs.: Andreas Häßler, Ing., ?904 Erbich, Jahnstrasse 45Abs .: Andreas Häßler, Ing.,? 904 Erbich, Jahnstrasse 45
2643X062643X06
An dasTo the
Deutsche Patentamt Zweibrückenstrasse 12German Patent Office Zweibrückenstrasse 12
80008000
München - 2Munich - 2
Erbach, den 25.Sept.1976Erbach, September 25, 1976
"Verfahren zum Brennen von keramischen Erzeugnissen, insbesondere porosierte Erzeugnisse in Tunnelöfen""Process for firing ceramic products, especially porous products in Tunnel ovens "
Die neuen Emissionsschutzgesetze beinhalten strenge Vorschriften hinsichtlich der Reinheit von Abgasen. Bei den bekannten Verfahrensweisen in Tunnelofen wird das Abgas nach herrschender Lehre im wesentlichen am Ofeneingang abgesaugt und in den Kamin geführt. Der Abgasstrom reichert sich in der Anwärmzone mit Schadstoffen durch Vergasung von Polystyrol, Sägemehl und sonstigen flüchtigen Schadstoffen an, welche in (ie Atmosphäre gelangen. In letzter Zeit wurden Vorschläge gemacht den Abgasstrom, der wegen der Wärmeübertragungsverhältnisse in der Anwärmzone quantitativ an den Brenngutdurchsatz gebunden ist, durch Nachverbrennungseinrichtungen und Wärmeaustauscher vor dem Kamin auf ca. 700° C zu erhitzen und unschädlich zu machen. Durch den grossen Luftüberschuß des Abgasstromes ergeben sich aber große Brennstoffmengen zur Nachverbrennung der großen Abgasmenge. Schaltet man hinter die Nachverbrennungsanlage einen Wärmeaustauscher um diese Wärmemenge zurück zu gewinnen, so ergibt sich ein zu großer Wärmeüberschuß von geringwertiger Wärme, der für Trockenzwecke nur teilweise untergebracht werden kann. Mit den seitherigen Ofenbetriebsverfahren ist es besonders bei Beimischung schadstofferzeugender, verbrennlicher SubstanzenThe new emission protection laws contain strict regulations regarding the purity of exhaust gases. With the known Procedures in tunnel kilns, according to the prevailing doctrine, the exhaust gas is essentially sucked off at the kiln entrance and into the Chimney led. The exhaust gas flow is enriched in the heating zone with pollutants through gasification of polystyrene, sawdust and other volatile pollutants in (ie atmosphere reach. Lately proposals have been made to reduce the exhaust gas flow, which is quantitatively linked to the firing throughput due to the heat transfer conditions in the heating zone, to be heated to approx. 700 ° C by afterburning devices and heat exchangers in front of the chimney and rendered harmless. The large excess of air in the exhaust gas flow results in large amounts of fuel for afterburning the large amount of exhaust gas. If you connect a heat exchanger behind the post-combustion system in order to recover this amount of heat, the result is Excessive heat from low-quality heat, which can only be partially accommodated for drying purposes, results. With the kiln operating procedures that have existed since then, it is particularly important when adding pollutant-generating, combustible substances
zum Ton nicht möglich ein weitgehend schadstoffreies Abgas zu erreichen. Schädliche und zum Teil brennbare Substanzen werden vom festen in gasförmigen Zustand überführt (z.B. CO, Benzol, C-H; CÖH-Verbindungen) ohne zu verbrennen, weil die Verbrennungs-It is not possible to produce a largely pollutant-free exhaust gas with the sound reach. Harmful and partly flammable substances are converted from a solid to a gaseous state (e.g. CO, benzene, C-H; COH compounds) without burning, because the combustion
809 8JyJ)(M 9809 8JyJ) (M 9
-2- Seite zur PatentanineJdur.g "Verfuhren zum Brennen von keram. Erzeugnissen, insbes. porosierte Erzeugnisse in Tunnelöfen"-2- Page to the PatentanineJdur.g "Verfuhren for the firing of ceramics. Products, especially porous products in tunnel ovens "
Abs.: Andreas Häßler, Ing., 7904 Erbach, Jahnstrasse 45Abs .: Andreas Häßler, Ing., 7904 Erbach, Jahnstrasse 45
temperatur beim Vergasungsvorgang mindestens erreicht sein müsste. Es ergeben sich bislang auch große Wärmeverluste an solchen Öfen, wo erfahrungsgemäß große Mengen brennbarer Gase unverbrannt in die Atmosphäre entweichen.temperature should at least be reached during the gasification process. So far, there have also been large heat losses such ovens, where experience has shown that large amounts of flammable gases escape unburned into the atmosphere.
Der Erfindung liegt die Aufgabe zugrunde ein Verfahren anzugeben, bei dem die jetzt geforderten, geringen Emissionswerte mit betriebstechnischer Sicherheit ohne zuviel Aufwand zu erreichen sind. Ferner soll das Verfahren das bisherige Entweichen unverbrannter, brennbarer Gase in die Atmosphäre verhindern, indem diese brennbaren Gase nutzbringend im Ofen verbrannt werden. Die Abgase sollen bei hoher Temperatur restlos verbrannt werden. Das erfindungsgemässe Verfahren ist in beiliegender Zeichnung Fig. 3 als Ausführungsbeispiel und in Fig. 2 als zugehöriges Diagramm dargestellt. Fig. 1 zeigt einen Tunnelofen (1) mit üblicher Verfahrensweise, bei dem die Rauchgase über Füchse (2) in der Anwärmzone hinter dem Eingangsschieber (3) mittels Ventilator (4) zum Kamin (5) gefördert werden. Luft bzw. Brenn- und Rauchgase (6) bewegen sich entgegen der Durchlaufrichtung der Brennwagen (7) . Beim erfindungsgemässen Verfahren wird Brenngut mit schädlichen und/oder verbrennlichen Substanzen auf Brennwagen (8) durch einen Tunnelofen (9) bewegt-, in entgegengesetzter Richtung der Hauptgasströmung (10) im Tunnelofen. Im Prinzip gliedert sich der Tunnelofen nach dem erfindungsgemäßen Verfahren in die Zonen A bis F. Die Zone A stellt die indifferente Anwärmzone etwa bis unterhalb 200° C dar, in der keine Vergasungsvorgänge stattfinden. Ihr folgt die Zone B (etwa 200 bis 700° C) in der brennbare Stoffe aus den Formungen entgasen. Innerhalb der Zone C ist das Brenngut entgast und wird weiter aufgeheizt z.B. von 700° C bis 1200° C. Zone D ist Hauptbrennzone. Hier wird dem Tunnelofen der Ilauptteil des erforderlichen Brennstoffes zugeführt. Zone E ist Kühlzone bis etwa 850° C herab und Zone F Endkühlzone. Während in bekannten Tunnelofen die Abgase inThe invention is based on the object of specifying a method in which the low emission values now required can be achieved with operational safety without too much effort. Furthermore, the method is intended to prevent the previous escape Prevent unburned, flammable gases from being released into the atmosphere by usefully burning these flammable gases in the furnace will. The exhaust gases should be completely burned at a high temperature. The inventive method is in The attached drawing shows FIG. 3 as an exemplary embodiment and in FIG. 2 as an associated diagram. Fig. 1 shows a tunnel furnace (1) with the usual procedure, in which the flue gases via foxes (2) in the heating zone behind the inlet slide (3) be conveyed to the chimney (5) by means of a fan (4). Air or combustion and flue gases (6) move against the direction of passage of the kiln carriage (7). When according to the invention Process is firing material with harmful and / or combustible substances on the kiln car (8) through a tunnel kiln (9) moves in the opposite direction of the main gas flow (10) in the tunnel furnace. In principle, the Tunnel furnace according to the method according to the invention into the zones A to F. Zone A represents the indifferent heating zone down to approximately below 200 ° C, in which no gasification processes take place. This is followed by Zone B (around 200 to 700 ° C) in which flammable substances are degassed from the moldings. Inside zone C the material to be fired is degassed and is further heated, e.g. from 700 ° C to 1200 ° C. Zone D is the main firing zone. Here is the The main part of the fuel required is supplied to the tunnel kiln. Zone E is the cooling zone down to about 850 ° C and Zone F is the end cooling zone. While in known tunnel kiln the exhaust gases in
8098U/00498098U / 0049
ORIGINAL INSPECTEDORIGINAL INSPECTED
-3- Seite zur Patentanmeldung "Ve^ff-hien zum Brennen von keram. Erzeugnissen, insbes. porosierte Erzeugnisse in Tunnelöfen"-3- Page for the patent application "Ve ^ ff-hien zum Brennen von keram. Products, especially porous products in tunnel ovens "
Abs.: Andreas Häßler, Ing., 7904 Erbach, JahnsAbs .: Andreas Häßler, Ing., 7904 Erbach, Jahns
der Zone A und teilweise in der Zone B abgeführt werden, werden beim erfindungsgemäßen Verfahren diese mit sehr hoher Temperatur etwa 700° C bis 1200° C in der Zone C abgeführt und/oder teilweise in Zone D (Feuerzone) oder sogar teilweise noch mit hoher Temperatur in der Kühlzone E. Der Hauptgasstrom (10) wird im Brennkanal im wesentlichen durch Zone A geführt, dort über eine Umgehungsleitung (11) und Gebläse (12) in die Kühlzone "D." eingeführt. Es können unter Umständen erfindungsgemäß auch mehrere parallele Umgehungsleitungen angeordnet werden wie auch der Hauptgasstrom an mehreren Stellen der Anwärmzone entnommen und an mehreren Stellen der Kühlzone sowie teilweise in die Feuerzone wieder eingespeist werden kann. Der Abgasstrom (13), welcher kleiner ist als der Hauptgasstrom (10) wird unmittelbar vor der Feuerzone durch Fuchsthe zone A and partially in the zone B are discharged, these are very high in the process according to the invention Temperature about 700 ° C to 1200 ° C dissipated in zone C and / or partially in zone D (fire zone) or even partially still at a high temperature in the cooling zone E. The main gas flow (10) is guided in the combustion channel essentially through zone A, there via a bypass line (11) and fan (12) into the cooling zone "D." introduced. It can be according to the invention under certain circumstances several parallel bypass lines can also be arranged, as well as the main gas flow at several points taken from the heating zone and fed back into the cooling zone at several points and partially into the fire zone can. The exhaust gas flow (13), which is smaller than the main gas flow (10), passes through Fuchs immediately before the fire zone
(14) im Hochtemperaturbereich dem Tunnelofen entnommen, etwa bei 600 bis 1200° C. Die Temperatur an der oder den Entnahmestellen des Abgases soll höher sein als die Vergasungstemperatur der brennbaren Stoffe in den Formungen in der Entgasungszone 11B", damit kein unverbranntes Schwelgas in den Abgaskamin gelangt. Somit gelangt das gesamte Schwelgas sowie flüchtige Schadstoffe über die Umgehungsleitung (11) durch die Feuerzone des Ofens und verbrennt dort bei Höchsttemperatur restlos. Das Abgas kann auch an mehreren Stellen des Hochtemperaturbereichs bis hin zur Kühlzone entnommen werden. Der Abgasstrom von hoher Temperatur (ca. 600 bis 1000° C) wird für weitere Heizzwecke verwendet z.B. Wärmeaustauscher (15) zur Heißlufterzeugung oder Dampferzeugung und wird dann über Gebläse (16) auf übliche Abgastemperatur abgekühlt in den Kamin gefördert. Gemäß Fig. 3 bedeutet (17) einen, im Wärmeaustauscher(14) Taken from the tunnel furnace in the high temperature range, around 600 to 1200 ° C. The temperature at the point (s) of the exhaust gas should be higher than the gasification temperature of the combustible substances in the moldings in the degassing zone 11 B "so that no unburned carbonization gas in This means that all of the carbonization gas and volatile pollutants pass through the bypass line (11) through the furnace's fire zone, where it burns completely at the highest temperature Temperature (approx. 600 to 1000 ° C) is used for other heating purposes, e.g. heat exchanger (15) to generate hot air or steam and is then cooled to the usual exhaust gas temperature via fan (16) and fed into the chimney. According to FIG. 3, (17) means a , in the heat exchanger
(15) für Trockenzwecke erzeugten Heißluftstrom. Die Beheizung des Ofens erfolgt über seitliche oder obere Heizlöcher (18) mit sonst üblichen Brennstoffen unter Verbrennungsluftzugabe in bekannter Weise. Da beim erfindungsgemäßen Verfahren eine vollständige Abkühlung des Brenngutes in der Kühlzone "E" infolge Kühlung mit dem Hauptgasstrom (10) nicht erfolgt, ist am(15) hot air flow generated for drying purposes. The furnace is heated via the side or top heating holes (18) otherwise common fuels with the addition of combustion air in a known manner. Since in the method according to the invention a complete The material to be fired has not been cooled in the cooling zone "E" due to cooling with the main gas flow (10)
Ö098U/00A9Ö098U / 00A9
INSPECTEDINSPECTED
-4- Seite zur Patortaameldung ''Verfahren zum Brennen von keram, Erzeugnissen, insbes. porosierte Erzeugnisse in Tunnelöfen"-4- page on the patorta message '' method for firing ceramics, Products, especially porous products in tunnel ovens "
Abs.: Andreas Häßler, Ing., 7904 Erbach, Jahnst£g A3} L Q ßAbs .: Andreas Häßler, Ing., 7904 Erbach, Jahnst £ g A3} L Q ß
Tunnelofen zur Durchführung des erfindungsgemäßen Verfahrens eine Endkühlzone "F" vorgesehen, welche zweckmässig durch Schieber (19) vom Ofenraum getrennt ist und mittels eines Kühlluftstromes (20) zur RestkiShlung des Brenngutes beaufschlagt wird. Letztlich sei erklärt, daß der Abgasstrom (13) einen höheren CO2 Gehalt aufweist als dies bei den bekannten Betriebsverfahren in Tunnelöfen der Fall ist, sodaß allein schon daraus eine wesentliche Verbesserung des Wärmewirkungsgrades gegeben ist. Durch die Abführung des Gasstromes unmittelbar nach passieren der Hochtemperaturzone werden alle Schadstoffe restlos verbrannt. Die erforderliche Luftzufuhr im Gesamtsystem ist nicht auf die Brennzone beschränkt und kann in allen Zonen, je nach Konzentrationserfordernis, erfolgen. In diesem Zusammenhang wird vorgeschlagen, zur intensiven Gasmischung im System die Gebläse in der oder den Umgehungsleitungen als Reversierstromgebläse auszubilden, mit kurzzeitig, wechselnder Strömungsrichtung.Tunnel furnace for carrying out the method according to the invention a final cooling zone "F" is provided, which is conveniently separated from the furnace chamber by slide (19) and by means of a Cooling air flow (20) is applied to the residual cooling of the material to be fired. Ultimately, it should be explained that the exhaust gas flow (13) has a higher CO2 content than is the case with the known operating methods in tunnel kilns, so that alone This already results in a significant improvement in the thermal efficiency. Directly through the discharge of the gas flow After passing through the high temperature zone, all pollutants are completely burned off. The required air supply in the overall system is not limited to the combustion zone and can take place in all zones, depending on the concentration requirements. In this context, it is proposed that the fans in the system be used for intensive gas mixing Train bypass lines as reversing flow fans with brief, alternating flow directions.
8098U/0CH9 8098U / 0CH9
ORIGINAL INSPECTEDORIGINAL INSPECTED
Claims (1)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2643406A DE2643406C3 (en) | 1976-09-27 | 1976-09-27 | Tunnel furnace with direct firing |
CH1158377A CH628972A5 (en) | 1976-09-27 | 1977-09-22 | Tunnel furnace with direct firing |
FR7728882A FR2365766A1 (en) | 1976-09-27 | 1977-09-26 | PROCESS AND OVEN-TUNNEL FOR COOKING CERAMIC PRODUCTS |
NO773289A NO147533C (en) | 1976-09-27 | 1977-09-26 | TUBE OVEN WITH DIRECTLY. |
DK425677A DK151596C (en) | 1976-09-27 | 1977-09-26 | TUNNEL OVEN FOR BURNING OF CERAMIC GOODS |
NL7710546A NL7710546A (en) | 1976-09-27 | 1977-09-27 | METHOD AND DEVICE FOR BURNING FORMED CERAMIC OBJECTS. |
AT0690077A AT384101B (en) | 1976-09-27 | 1977-09-27 | TUNNEL STOVE FOR BURNING CERAMIC MOLDINGS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2643406A DE2643406C3 (en) | 1976-09-27 | 1976-09-27 | Tunnel furnace with direct firing |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2643406A1 true DE2643406A1 (en) | 1978-04-06 |
DE2643406B2 DE2643406B2 (en) | 1979-10-11 |
DE2643406C3 DE2643406C3 (en) | 1980-07-03 |
Family
ID=5988948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2643406A Expired DE2643406C3 (en) | 1976-09-27 | 1976-09-27 | Tunnel furnace with direct firing |
Country Status (7)
Country | Link |
---|---|
AT (1) | AT384101B (en) |
CH (1) | CH628972A5 (en) |
DE (1) | DE2643406C3 (en) |
DK (1) | DK151596C (en) |
FR (1) | FR2365766A1 (en) |
NL (1) | NL7710546A (en) |
NO (1) | NO147533C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0103814A1 (en) * | 1982-09-17 | 1984-03-28 | Maerz Ofenbau AG | Process for producing cement clinkers |
DE4023432A1 (en) * | 1989-10-18 | 1991-04-25 | Werner Ing Grad Strohmenger | Tunnel kiln - with heat exchangers for preheating gas circuit fed by hot gases from cooling zone |
US5613847A (en) * | 1994-07-01 | 1997-03-25 | Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co. | Heat transfer in a tunnel kiln |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1098416B (en) * | 1978-09-04 | 1985-09-07 | Salviati Impianti Spa | PROCEDURE FOR THE PRODUCTION OF BRICKS AND PLANT FOR THE IMPLEMENTATION OF THAT PROCEDURE |
ATA312180A (en) * | 1980-06-12 | 1986-03-15 | Walter Ing Rieger | METHOD FOR BURNING THIN-WALLED CERAMIC MOLDINGS CONTAINING IN PARTICULAR CORE HOLES, AND SYSTEM FOR IMPLEMENTING THE METHOD |
DE3042708C2 (en) * | 1980-11-10 | 1986-07-17 | Rudolf 2106 Bendestorf Riedel | Tunnel furnace with two parallel channels |
AU546816B2 (en) * | 1981-03-11 | 1985-09-19 | Andreas Hassler | Cassette and method for firing ceramic forms |
DE3324764C1 (en) * | 1983-07-08 | 1985-02-14 | Air Fröhlich AG für Energierückgewinnung, Arbon | Process for the operation of a throughflow kiln, especially a tunnel kiln, for the firing of ceramic mouldings and apparatus for the performance of this process |
DE3516058C2 (en) * | 1984-08-21 | 1986-07-17 | Institut für Ziegelforschung Essen e.V., 4300 Essen | Tunnel furnace for firing ceramic blanks and method for operating such a tunnel furnace |
DE3517866A1 (en) * | 1985-05-17 | 1986-11-20 | C. Keller GmbH u. Co KG, 4530 Ibbenbüren | Method for direct firing of a tunnel furnace as well as tunnel furnace for implementing the method |
DE3525771A1 (en) * | 1985-07-19 | 1987-01-22 | Haessler Andreas | Tunnel furnace with waste gas flow which is low in harmful substances |
AT383886B (en) * | 1985-12-23 | 1987-09-10 | Walter Ing Rieger | METHOD FOR PRODUCING BRICKS FROM CLAY SHAPES AND SYSTEM FOR IMPLEMENTING THE METHOD |
DE3605780C1 (en) * | 1986-02-22 | 1987-06-19 | Manfred Zimmermann | Tunnel furnace for baking raw graphite electrodes |
DE3627050C1 (en) * | 1986-08-09 | 1991-11-28 | Lingl Anlagenbau | Tunnel kiln for the reducing firing of facing bricks |
AT401817B (en) * | 1993-12-01 | 1996-12-27 | Rieger Walter | METHOD FOR BURNING CERAMIC MOLDINGS AND SYSTEM FOR IMPLEMENTING THE METHOD |
IT1309033B1 (en) * | 1999-03-08 | 2002-01-15 | Tecnochimica Sassolese S R L | CONTINUOUS OVEN PERFECTED FOR HEAT TREATMENT OF MATERIALS |
DE102011100736A1 (en) | 2011-05-06 | 2012-11-08 | Andreas Hässler | Method for operating e.g. tunnel furnace used for firing brick, involves directing exhaust gas stream from tunnel furnace to waste heat boiler for generating electric power utilized for drying and heating processes of furnace |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1226477B (en) * | 1962-02-05 | 1966-10-06 | Kollergeneratoren Und Ofenbau | Method for heating a kiln, in particular a tunnel kiln |
FR1413674A (en) * | 1964-11-09 | 1965-10-08 | Robert Aebi A G | Method of operating a tunnel kiln and device for implementing the method |
DE1301436B (en) * | 1965-03-01 | 1969-08-21 | Andreas Haessler | Process for the operation of tunnel ovens u. Like. For firing ceramic products |
FR1470155A (en) * | 1966-02-28 | 1967-02-17 | Firing process and device for implementing this process for operating continuous circulation furnaces for ceramic products | |
DE1303473C2 (en) * | 1966-04-06 | 1974-01-17 | Keller Ofenbau Gmbh, 4533 Laggenbeck | PROCESS FOR CONTINUOUS BURNING OF CERAMIC MATERIALS IN TUNNEL FURNACES AND TUNNEL FURNACES TO PERFORM THE PROCESS |
FR2038592A5 (en) * | 1969-03-19 | 1971-01-08 | Koho Es Gepipari Miniszterium | Tunnel kiln for the firing of refractory - ceramic products |
-
1976
- 1976-09-27 DE DE2643406A patent/DE2643406C3/en not_active Expired
-
1977
- 1977-09-22 CH CH1158377A patent/CH628972A5/en not_active IP Right Cessation
- 1977-09-26 NO NO773289A patent/NO147533C/en unknown
- 1977-09-26 DK DK425677A patent/DK151596C/en not_active IP Right Cessation
- 1977-09-26 FR FR7728882A patent/FR2365766A1/en active Granted
- 1977-09-27 AT AT0690077A patent/AT384101B/en not_active IP Right Cessation
- 1977-09-27 NL NL7710546A patent/NL7710546A/en not_active Application Discontinuation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0103814A1 (en) * | 1982-09-17 | 1984-03-28 | Maerz Ofenbau AG | Process for producing cement clinkers |
AT376959B (en) * | 1982-09-17 | 1985-01-25 | Maerz Ofenbau | METHOD FOR PRODUCING CEMENT CLINKER |
DE4023432A1 (en) * | 1989-10-18 | 1991-04-25 | Werner Ing Grad Strohmenger | Tunnel kiln - with heat exchangers for preheating gas circuit fed by hot gases from cooling zone |
US5613847A (en) * | 1994-07-01 | 1997-03-25 | Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co. | Heat transfer in a tunnel kiln |
Also Published As
Publication number | Publication date |
---|---|
CH628972A5 (en) | 1982-03-31 |
NO147533C (en) | 1983-04-27 |
AT384101B (en) | 1987-10-12 |
ATA690077A (en) | 1987-02-15 |
DK151596C (en) | 1988-05-24 |
DE2643406B2 (en) | 1979-10-11 |
NL7710546A (en) | 1978-03-29 |
DK425677A (en) | 1978-03-28 |
FR2365766B1 (en) | 1982-12-17 |
FR2365766A1 (en) | 1978-04-21 |
DK151596B (en) | 1987-12-14 |
NO773289L (en) | 1978-03-29 |
DE2643406C3 (en) | 1980-07-03 |
NO147533B (en) | 1983-01-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2643406A1 (en) | PROCESS FOR BURNING CERAMIC PRODUCTS, IN PARTICULAR PORATED PRODUCTS, IN TUNNELS | |
EP2230477B1 (en) | Wood chips drying plant for drying wood chips and method for drying wood chips | |
EP2078911B1 (en) | Method for continuous drying of bulk material, in particular of wood fibres and/or wood chippings | |
DE4017806A1 (en) | METHOD AND SYSTEM FOR THE CONTINUOUS DRYING OF WOODCHIPS, WOOD FIBERS OR OTHER SHEET GOODS | |
DE2810043A1 (en) | Heat treating refractory bricks contg. tar - to remove volatile constituents in tar content by heating in oxygen free inert gas | |
DE3717320C1 (en) | Tunnel kiln for burning light bricks with a high proportion of combustible and gasifiable components | |
DE2652587A1 (en) | Recovering energy from combustible pore formers - used in firing ceramic porous articles, partial off-gas by recirculation | |
DE464473C (en) | Device for burning dust-like fuel with degassing of the fuel before it is introduced into the furnace | |
DE3014905B1 (en) | Process and tunnel kiln for firing ceramic moldings containing fuel | |
DE1451505A1 (en) | Process for incinerating household waste and / or industrial waste as well as mechanical grate firing to carry out this process | |
DE466298C (en) | Method of burning cement with granulation of the raw material before burning | |
DE161095C (en) | ||
DE3923887A1 (en) | Tunnel furnace for firing ceramics - with decomposition toxic gases withdrawn and reheated to ensure complete burning before being exhausted to atmos. | |
DE4412170C1 (en) | Harmful gas emissions oxidn. by cool extn. and hot return to tunnel furnace | |
DE3516058C2 (en) | Tunnel furnace for firing ceramic blanks and method for operating such a tunnel furnace | |
DE3437970A1 (en) | Method and device for operating a self-burning tunnel furnace | |
DE3215032C2 (en) | Method for guiding flue gas in a tunnel furnace and device for carrying out the method | |
DE498536C (en) | Device for smoke combustion in boiler furnaces with grate walls built into the exhaust duct | |
AT387456B (en) | Tunnel kiln for firing ceramic products | |
DE895957C (en) | Process and device for returning fly ash in pulverized coal furnaces with an ignition table | |
DE559551C (en) | Cremation furnace | |
DE28860C (en) | Gas heating device on stoves for burning brick, lime, terracotta, faience, porcelain, etc. | |
AT22689B (en) | Firing. | |
DE569239C (en) | Inclined or hollow grate firing with auxiliary grate upstream of the main grate | |
DE804338C (en) | Method and device for burning wet fuels in steam boiler internal combustion systems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAP | Request for examination filed | ||
OD | Request for examination | ||
C3 | Grant after two publication steps (3rd publication) | ||
8310 | Action for declaration of annulment | ||
8313 | Request for invalidation rejected/withdrawn | ||
8339 | Ceased/non-payment of the annual fee |